Title:
COMBINATION ELECTRONIC AND AIR-COLUMN ACTUATED STETHOSCOPE
United States Patent 3539724
US Patent References:
/1686138.html
- - 1686138
Acoustic and electronic stethoscope
- - 3247324
/3182129.html
- - 3182129
Electronic sound detector
- - 3385930
/1686138.html
- - 1686138
Acoustic and electronic stethoscope
- - 3247324
/3182129.html
- - 3182129
Electronic sound detector
- - 3385930
Inventors:
Keesee, Daniel C.
Publication Date:
11/10/1970
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Export Citation:
Assignee:
Daniel, Keesee C.
Primary Class:
Other Classes:
381/109, 381/98
International Classes:
A61B7/02; H03F3/183; A61B7/00; H03F3/181; H04R23/00